Figure 1. Timeline showing milestones in the history of X-inactivation (1950–1975).
Images are taken from http://commons.wikimedia.org, are a courtesy of the corresponding authors, or are unpublished data.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.